Periodic Reporting for period 4 - UNEARTH (Uranium isotope fractionation: a novel biosignature to identify microbial metabolism on early Earth)

Uranium reduction is a natural process that occurs in the absence of oxygen and is catalyzed by microorganisms or by reduced aqueous and solid phase chemical species. Oxidized uranium (hexavalent U) is soluble in the presence of common water chemicals (e.g., carbonate) while...